Migrate to mantine v6 (#15)

* Add letter spacing to cell text

* Set window control height in px

* Add temp unused routes

* Migrate text title font weights

* Bump mantine to v6 alpha

* Migrate modals / notifications

* Increase header bar to 65px

* Adjust play button props

* Migrate various components

* Migrate various pages and root styles

* Adjust default badge padding

* Fix sidebar spacing

* Fix list header badges

* Adjust default theme

src/renderer/features/shared/components/play-button.tsx

@@ -17,9 +17,9 @@ const MotionButton = styled(motion(_Button))`
 export const PlayButton = ({ ...props }: Omit<ButtonProps, 'children'>) => {
   return (
     <MotionButton
-      h={50}
+      h="50px"
       variant="filled"
-      w={50}
+      w="50px"
       whileHover={{ scale: 1.1 }}
       whileTap={{ scale: 0.95 }}
       {...props}